Checker brick molding machine



Fela". 28, 1933. M MILLER 1,899,708

CHECKER BRICK MOLDING MACHINE 4 Filed March 7, 1951 2 Sheets-Shem 1 fim #1 mm Feb. 28, 1933. F. M. MILLER CHECKER BRICK MOLDING MACHINE 2 Sheets-Sheet 2 Filed March 7, .1931

v 4 W W\\\\\\\\\\.\\= 3 W 1/ M a 2 "w m X m H w M I 6 M M H Q .l/ w 2 4 5 I 7 71 4 I z N i L Patented Feb. 28, 1933 UNITED STATES FRED M. MILLER, OF BALA, PENNSYLVAN CHVECKER BRICK MoLDIi IG MACHINE, Y

Application filed March 7, 1931. Serial Nd 520,860.

My device is an improved machine for making bricks or similar objects of clay or like material and is particularly adapted for the rapid and economical production ofperforated bricks of refractory material for use as checkers in blast furnaces, gas manufacturing apparatus or the like.

a My machine consists of means for extruding clay, a die through which the clay may be extruded, a mold box, means for supporting the mold box so that it may be revolved about a horizontal axis, means for cutting. off the finished brick in. the mold box, an off bearing table having pins projecting into said mold box, fastening means for attaching said mold box to said die,'fas

tening means for attaching said ofi' bearing table to said mold'box, and'means for raising or lowering said ofi bearing table and for raising vand lowering said mold box on said ofi bearing table; 7

For a further exposition of my invention reference may be had to the annexed drawings and specification at the end whereof my invention will be specifically pointed out and claimed.

In the drawings,

Figure 1 is a side elevation of parts of my device with parts-shownin vertical cross section. V

'Figure, 2 is a side elevation of the die,.cutting means and mold box taken at right angles to Figure 1.

Figure 3 is a cross section on line 33 of Figure 1 in the direction of the arrows. Figure 4 is a side elevation of the die, mold box and ofi bearing table with parts shown in vertical cross section.

Figure 5 is a plan view of the mold box and off bearing table with parts shown in horizontal cross section.

Figure 6 is a plan view of one form of brick which can be made in my device. Figure 7 is a vertical cross section on line 7-7 of Figure 6. g In the embodiment of my invention chosen for illustration in the drawings, my device is shown as consisting of means for extruding clay, This means is shown asconsis'ting of an extrusion head 1 but this may be a screw fits. provided with a die generallyindicated at? which may be of the double shape shown in ed beneath mold box 9 is an off bearing table conveyor or other device suitable for the purpose. The extrusion means 1 are operat- Y ed by a source o fpower2 which is shown in this instance as consisting of'a steam piston and cylinder but which maybe an hydraulic press, an electric motor or any other convenient source of power. i

My machine includes a hopper .3 which is adapted to receive clay for making bricks. Hopper 3 has thereon a pipe 4 from which perforations 5 lead into the hopper 3 for the purpose of supplying oil to the hopper. Hop- "per 3 connects at its lower end with a cylinder 6 into which extrusion head 1 Atits lower end cylinder 6 is" the drawings or which may consist of but a single nozzle-like member of somewhat smaller cross section than cylinderfi; On die 7 are located pins 8 which serve as guides for the mold box. The mold boxis generally indicated at 9 and has in its upper" face holes 10 which receive pins 8' therein and which thereby guide mold box 9 intoproper position beneath die 7. Mold box 9 also carries trunnions 11 which "slide in slots -12 in guides 13 and which provide ,means for guiding and supporting mold box 9. One of the trunnions 11 carries a handle 14 which provides a means for rotating the mold box 9 about ahorizontal axis. 7 In its lower surface, mold, box 9 is provided with tapered orifices 15. Mountgenerally indicated at 16 which carries a plurality of pins 17 thereon, pins 17 being aligned with the orifices 'and being adapted to pass therethrough. The bearing table 16 is mounted on a standard 18 which is provided with means for raising or lowering the OE bearing table. These means consist of a clamp19 attached to standard 18, a plurality of ropes 20 attached to "said clamp, counterweight 21 attached to said ropes and a hand wheel 22 operatively connected to one of said ro 4 a, i e ferring more particularly to Figures 2 and there are shown "attached to die 7 cutting means for separating the finished brick in mold box 9from the "clay in die 7. These means may consist of a wire 23 mounted in a bow 24 which in turn is pivotally mounted on a support 25 which is shown as attached to die 7. 7

Having reference now especially to Figures 4 and 5, the die 7 is shown as having a pluralityoflugs 26 thereon which are adapted tocooperate with a plurality of clamping levers 27 which are pivotally mounted on mold box 9. These elements serve to attach mold box 9 to die 7. Asis best seen in Figure 5 mold box 9 may be composed of a plurality of parts marked 9a, 9?) and 9c in Figure 5. These parts are. attached togetherby means which permit the expansion of mold .9 about the brick "which has been formed therein. ,Theseexpansion means consist of .a plurality of screws 28 which have shouldered portions 29 thereon. Thesaid shouldered portionsbear onlugs on the respective mold portions9a,9b and 90. Screws 28 also have screw threaded portions 30 with which are adapted to contact nuts 31 which bear against. the lugs on adjacent mold sections 96,90 andj9a. Screw s28are also provided withhandles 32 whichareclampedor otherwise suitably attached to the screws and which serve asmeans for imparting a rotary motion to thelscrews. Adjacent the lower .edge, the mold box 9 isprovided with a plu- .areprovided at their upper ends withcaps 35 whichareattached tothe pins 17 by screws 136.0 n a yiother v n en ma n .40

:Figures 6 and 7 show a brick 37 having a plurality ofperforations 38 therein which m ybe c n e n y m de nimytma h n flhe operation ofimy machine isas follows: Starting from the position shownin Figure l the ofi'bearing table 16 is lifted by means of hand wheel 22 so that the pins .17 pass throughthe orifices l5 andthe mold-9is lift- -edby the 01f bearing table 16. During this lifting operation the .mold 9 is guided by means of :trunnions 11in slots 12 in elements 13. Upon further lifting of off bearing-table 16,-.and.mold 9,v guidepinsB enter holes 10 so that mold 9 ,is correctly located with refer- .ence,to die 7. Clampinglevers 27 are then attaohedyto ilugs 26.so;that mold 9 is fastened to die 7 -andclamping levers 34 are attached tofilugs 33.so-.that.the off bearing table isfirmlyattachedtoanold 9. Hopper 3 andscylin- Jder B- have previously been filled with clay. ;-Ste,an1 is thenjletinto cylinder 2so that extrusion head 1 is forced into cylinder 6 andclay gis forced outof die 7-inton1old box 9. The int oriameter Q mOIdb Q ay .b nveniently made ,slightly greater than the interior diameter of;die v 7 so that thereare no a ie- If other extruding means are used their operation is continued until mold box 9 is filled with clay. The extrusion head 1 may then be lifted and the mold box 9 unclamped from the die 7. Cutting wire 23 is then actuated between the 7 and mold box 9 and sever s'the clay in the .mold box 9 from the clayin die 7. Off bearing table 16 and.mold;9, which is carried, thereby, are then dropped until mold 9 is supported by the bottomof slots 12 upon trunnions 11. The excessclay is then removed from the top of the clay in noldbox 9 and the surface of the brick therein is slicked by hand. Off bearing table16 is then further lowered thereby drawing pins- 17 out of moldbox 9 and out of the clay therein. A palletor wooden board is thenplaced on topof pins 17. Mold box 9 is then inverted by ng h y nel box bout th ho zental axis by means of handle 14. Q if bearing, table 16 is then elevateduntilthe pallet rests against the lower surface ofthe'brick box 9. The inoldbox 9 isthen expandedby looseningscrews 28 by means of handles 32. This frees thebriek 37fro n the mold box 9. Off bearing table 16 is thenloweredgearrying the brick out of mold box9. The cycle of operation is then repeated to form another brick. I do not intend to be limitedin the practice of my invention save as the scope of the prior art and of the attachedclaims may require. 'cla m 1. A molding machine including a cylinider, 1neans forextruding the clay fromlsai'd cylinder, a die forming an o-utlet for clay from said cylinder, a moldbox motably mounted for verticalmovement with respect to said. die and rotatable about a -horiz ontal. axis, and an off bearing table mounted for vertical movement and located to carry said mold box into position adjacent said die. 2. Amoldin g machine includingin combination acylinder, means for extruding clay from said cylinder, a die forniingan outlet on y m a dcy nder; amo dlbex m ably mounted for verticalmoven ent with .respect to saiddie and rotatable abou t a hori- Zontal axis, an off bearingtable nountedforvertical movement to carry said mold,box into position adj acent said die, and means for r gi l y n sai mol ibo from day in .3. A m ld ng m n nelu ingiin cdmb 1 nation a cylinder, means for extruding clay from said cylinder, a die forming an outlet for clay from said cylinder, a mold box mounted for movement relative to said die and rotatable about a horizontal axis, an off bearing tab-1e mounted for movement relative to said mold box and for movement carrying said mold box into position adjacent said die, means for fastening said mold box to said die, and means for fastening said ofi bearing table to said mold box.

4. A molding machine including in combination, a cylinder, means for extruding clay from said cylinder, a die forming an outlet for clay from said cylinder, a mold box mounted for movement relative to said die and rotatable about a horizontal axis, an off bearing table mounted for movement relative to said mold box and for movement for carrying said mold box into position adjacent said die, and means for expanding said mold box.

5. A molding machine including in combi nation a cylinder, means for extruding clay from said cylinder, a die forming an outlet for clay from said cylinder, a mold, box mounted for movement relative to said die, and rotatable about a horizontal axis, an off bearing table mounted for movement relative to said mold box and for movement to carry said mold box into position adjacent said die, and pins on said off bearing table projecting into said mold box When said mold box and said ofi bearing table are adj acent.

6. A molding machine including in combination a cylinder, means for extruding clay from said cylinder, a die forming an outlet for clay from said cylinder, means for lubricating clay in said machine, a mold box mounted for movement relative to said die, means for rotating said mold box about a horizontal axis, and an off bearing table mounted for movement relative to said mold box and for movement carrying said mold box into position adjacent said die.

7. A machine for molding checkerbrick including in combination means for extruding clay through a die, an open top rollover mold box having a perforated bottom, guides for permitting relative movement of the box and die and for permitting the box to roll over, a table provided with pins adapted to pass through the perforations in the bottom of the box, means for moving said table for inserting the pins into the box and for putting the box intoclay receiving position and for putting the box into rollover position and for Withdrawing the pins into pallet and brick receiving position When the mold is rolled over, means for cutting off clay between the die and the mold, and means for expanding the mold.

8. In a brick molding machine the combination of a rollover mold box open at the FRED M. MILLER. 

